You should have a look at /etc/apache2/mod_log_config.conf (line 11). There's a syntax error, or your Apache is missing some module. But you can also disable mod_log_config.conf in your main Apache configuration.

How did you save /etc/init.d/proftpd when you copied it from the howto? Did you use Unix line breaks or Windows line breaks? You should use Unix line breaks.
Also, server1.example.com was meant as an example in the howto, it doesn't exist in the "real" world. You should have replaced it with your own hostname.

i go to the /etc/apache2/mod_log_config.conf and put a # for all of lines start with LogFormat....
i saw a error for other files the where about "log"
how can i reinstall apache module for "log"ing??????